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Finding the Fourth Proportional to 346,776.40, 520,294.20 and 136,560.88

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Solution

The fourth proportional to 346,776.40, 520,294.20 and 136,560.88 is: 204,892.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,776.40 : 520,294.20 = 136,560.88 : x
  2. Step 2: Convert to fraction form
    346,776.40/520,294.20 = 136,560.88/x
  3. Step 3: Cross multiply
    346,776.40x = 520,294.20 × 136,560.88
  4. Step 4: Simplify right side
    346,776.40x = 71,051,833,810.90
  5. Step 5: Solve for x
    x = 71,051,833,810.90/346,776.40
  6. Step 6: Final answer
    x = 204,892.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.